CN114045849A - Foundation pit high-temperature bedrock crack water drainage and plugging structure and method - Google Patents
Foundation pit high-temperature bedrock crack water drainage and plugging structure and method Download PDFInfo
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- CN114045849A CN114045849A CN202111168398.6A CN202111168398A CN114045849A CN 114045849 A CN114045849 A CN 114045849A CN 202111168398 A CN202111168398 A CN 202111168398A CN 114045849 A CN114045849 A CN 114045849A
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- water
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- collecting well
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
Abstract
The invention discloses a foundation pit high-temperature bedrock crack water drainage and blocking structure, which relates to the field of constructional engineering and comprises spring holes and water collection pits, wherein the spring holes are connected with the water collection pits through drainage ditches, and two water collection wells which are distributed side by side are arranged at the bottom of each water collection pit. The invention also discloses a water draining and plugging method for the high-temperature bedrock cracks of the foundation pit, which comprises the following parts: A. a spring eye portion; B. a drainage ditch location; C. plugging the water collecting well part, the water outlet point D and the water outlet point; the plugging structure is formed by matching of graded broken stones, reinforced concrete, non-woven fabrics, a finished iron drum and the waterproof air bag, and the water outlet can be plugged quickly and perfectly. According to the invention, the spring holes, the drainage ditches and the water collecting pits are blocked by matching the aggregate and the broken stones, the non-woven fabrics and the reinforced concrete, the water collecting well is formed by matching the finished iron drum and the concrete, and the water collecting well is blocked by the rubber water-stopping air bag, the reinforced concrete and the steel plate layer, so that the blocking efficiency of the invention is improved.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a structure and a method for draining and plugging fractured water of a high-temperature bedrock of a foundation pit.
Background
The common method for basement bottom plate construction is 10 cm concrete cushion, waterproof coiled material laying, bottom plate reinforcement and concrete pouring, and the underground water leakage condition of the bottom plate surface layer can easily occur. Because the groundwater pressure is too big, even there is the waterproof layer, the seepage also appears.
The conventional grouting plugging and foaming method in the prior art is labor-consuming, time-consuming and high in cost, and influences the subsequent floor paint construction and delivery for the constructed basement. Therefore, it is necessary to invent a water draining and plugging structure and method for high temperature bedrock cracks of foundation pits to solve the above problems.
Disclosure of Invention
The invention aims to provide a structure and a method for draining and plugging fractured water of high-temperature bedrock of a foundation pit, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a foundation ditch high temperature basement rock crack log raft and block structure, includes spring eye and sump pit, link to each other through the escape canal between spring eye and the sump pit, the well bottom of sump pit is provided with two sump pits that distribute side by side, the hole groove has been seted up to the opening part of spring eye, the graded rubble has all been laid to the inside of hole groove, sump pit and sump pit, the upper surface laminating of graded rubble is connected with the non-woven fabrics layer, the bed course has been pour to the upper surface on non-woven fabrics layer, be provided with the reinforcing bar net in the bed course, the position outside of the protruding bed course of sump pit has been pour the C20 concrete.
Preferably, the inner side of the upper end of one of the water collecting wells is provided with a rubber water stop air bag, C30 early-strength concrete is poured at the wellhead of the one of the water collecting wells, and reinforcing ribs are embedded in the C30 early-strength concrete.
Preferably, a steel plate layer is arranged at the lower end of the other water collecting well, a pressure relief pipe penetrates through the middle of the steel plate layer and is connected with the steel plate layer in a sealing mode through a sealing flange, and the bottom end of the pressure relief pipe is connected with a valve.
Preferably, the first section of the water collecting well is formed by welding and connecting two finished iron buckets, and the position with the height of 40cm between the two finished iron buckets is in through connection by adopting a carbon tube.
Preferably, the outer side of the lower end of the finished iron bucket is provided with a plurality of through holes which are vertically distributed at equal intervals, and each group is provided with a plurality of through holes which are distributed in an annular array.
A method for draining and plugging fractured water of a high-temperature bedrock of a foundation pit comprises the following steps:
A. spring hole parts:
a-1: digging a pit with the depth not less than 1500mm and the diameter of 2000mm at the spring hole;
a-2: filling graded broken stones in the pit groove, laying a non-woven fabric layer on the graded broken stones, and pouring a cushion layer on the upper surface of the non-woven fabric layer;
B. drainage ditch position: digging a drainage ditch of 500mmX1000mm between the spring eyes and the water collection wells;
C. a water collecting well part:
c-1: digging a water collecting pit at the position of the water collecting well, and then arranging the water collecting well at the bottom of the water collecting pit;
c-2: welding two finished iron drums with the diameter of 60cm and the height of 90cm to form a first section of a water collecting well, uniformly forming holes below 30cm on the outer wall of each finished iron drum, and simultaneously, connecting the two finished iron drums at the position of 40cm in height by adopting a carbon tube with the thickness of 20mm in a through mode;
c-3: filling graded broken stones within the range of 500mm of the periphery of the first section of the water collecting well, pouring the part of the water collecting well extending out of the cushion layer to the top of the chopstick plate by using C20 concrete and the periphery of the water collecting pit, and plugging after the C20 concrete is poured for 48 hours;
D. plugging a water outlet point:
d-1: before plugging, the water level of the water collecting well is reduced to a position 200mm below a cushion layer, and waterless operation is guaranteed during plugging;
d-2: a rubber water-stopping air bag is adopted to firstly seal one of the water collecting wells, and the rubber water-stopping air bag is 200mm lower than the well mouth of the water collecting well;
d-3: after the rubber water-stopping air bag is inflated, pouring C30 early-strength concrete on the upper side of the rubber water-stopping air bag, and arranging a reinforcing rib inside the C30 early-strength concrete;
d-4: when the other water collecting well is plugged, a steel plate layer with the thickness of 5mm is arranged at the top end of the finished iron bucket, the middle part of the steel plate layer is connected with a pressure relief pipe through a flange sheet, the pressure relief pipe is connected to the bottom of the inner cavity of the pit-side water collecting well through a phi 100 galvanized steel pipe, a valve is additionally arranged at the bottom of the pressure relief pipe, and the valve is closed after the C20 concrete is poured for 48 hours.
Preferably, when the spring hole part is poured on the cushion layer, a reinforcing mesh is arranged in the cushion layer, and the reinforcing mesh is a 12@200 bidirectional single-layer reinforcing mesh.
Preferably, the water collecting well is 500mm lower than the water filtering layer.
Preferably, the size of the rubber water-stopping air bag is phi 600mm multiplied by 650mmX20mm, when the C30 early-strength concrete is poured, a reinforcing rib is arranged in the C30 early-strength concrete, and the reinforcing rib is arranged in a single-layer bidirectional mode at 12@ 200.
The invention has the technical effects and advantages that:
1. according to the invention, the spring holes, the drainage ditches and the water collecting pits are blocked by matching the aggregate and the broken stones, the non-woven fabrics and the reinforced concrete, the finished iron drum is matched with the concrete to form the water collecting well, and the water collecting well is blocked by the rubber water-stopping air bag, the reinforced concrete and the steel plate layer, so that the blocking efficiency of the invention is improved, and the construction cost is reduced;
2. the invention adopts the matching of graded broken stones, reinforced concrete, non-woven fabrics, finished iron drums and waterproof airbags to form a blocking structure, and can rapidly and perfectly block the water outlet.
Drawings
Fig. 1 is a schematic top view of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional view of the pit structure of the present invention.
Fig. 3 is a schematic cross-sectional view of the overall structure of the present invention.
Fig. 4 is a schematic partial cross-sectional view of a sump structure according to the present invention.
In the figure: 1. spring eyes; 2. a drainage ditch; 3. a sump; 4. a water collecting well; 5. a pit; 6. grading broken stone; 7. a non-woven fabric layer; 8. a cushion layer; 9. a reinforcing mesh; 10. c20 concrete; 11. a rubber water-stopping air bag; 12. c30 early strength concrete; 13. reinforcing ribs; 14. a steel plate layer; 15. a pressure relief pipe; 16. a valve; 17. a finished iron drum; 18. a carbon tube; 19. and a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a foundation pit high-temperature bedrock crack water draining and blocking structure as shown in figures 1-4, which comprises spring holes 1 and water collecting pits 3, wherein the spring holes 1 are connected with the water collecting pits 3 through drainage ditches 2, two water collecting wells 4 distributed side by side are arranged at the bottoms of the water collecting pits 3, a pit 5 is formed in an opening of the spring holes 1, graded broken stones 6 are paved inside the pit 5, the water collecting pits 3 and the water collecting wells 4, a non-woven fabric layer 7 is attached to the upper surface of the graded broken stones 6, the non-woven fabric layer 7 is arranged to prevent cement slurry from flowing into the pits when the cushion layer 8 is poured, a cushion layer 8 is poured on the upper surface of the non-woven fabric layer 7, a reinforcing mesh 9 is arranged in the cushion layer 8, the reinforcing mesh 9 is a 12@200 bidirectional single-layer reinforcing mesh, and C20 concrete 10 is poured outside the part of the water collecting wells 4 protruding out of the cushion layer 8.
Specifically, a rubber water-stopping air bag 11 is arranged on the inner side of the upper end of one of the water collecting wells 4, the rubber water-stopping air bag 11 plays a role in blocking, a C30 early-strength concrete 12 is poured at the well mouth of one of the water collecting wells 4, the C30 early-strength concrete 12 plays a role in further blocking, reinforcing ribs 13 are inlaid in the C30 early-strength concrete 12, the reinforcing ribs 13 are arranged in a 12@200 single-layer bidirectional mode, the strength of the C30 early-strength concrete 12 is improved, a steel plate layer 14 is arranged at the lower end of the other water collecting well 4, the steel plate layer 14 plays a role in blocking, a pressure relief pipe 15 is connected to the middle of the steel plate layer 14 in a penetrating mode, the pressure relief pipe 15 is connected with the steel plate layer 14 in a sealing mode through a sealing flange, a valve 16 is connected to the bottom end of the pressure relief pipe 15, and the pressure relief pipe 15 plays a role in pressure relief in cooperation with the valve 16.
More specifically, the first section of sump pit 4 is linked to each other by two finished product iron buckets 17 welding, and the carbon tube 18 through-connection is adopted in the high department of 40cm between two finished product iron buckets 17, and the through-hole 19 of many constituteing equidistant vertical distribution is seted up in the lower extreme outside of finished product iron bucket 17, and every group is provided with a plurality of through-holes 19 that are the annular array and distributes, and the setting of through-hole 19 has played the effect of water guide.
The invention also discloses a water draining and plugging method for the high-temperature bedrock cracks of the foundation pit, which comprises the following parts:
A. the part of the spring eye 1:
a-1: digging a pit 5 with the depth of not less than 1500mm and the diameter of 2000mm at the spring hole 1, and mainly pumping water for use during the construction of the water collecting pit 3;
a-2: filling graded broken stones 6 in the pit groove 5, then paving a non-woven fabric layer 7 on the graded broken stones 6 to prevent cement paste from flowing into the pit when the cushion layer 8 is poured, then pouring the cushion layer 8 on the upper surface of the non-woven fabric layer 7, and arranging a steel bar mesh 9 in the cushion layer 8 when the cushion layer 8 is poured, wherein the steel bar mesh 9 is a 12@200 bidirectional single-layer steel bar mesh;
C. the position of the water collecting well 4:
c-1: digging a water collecting pit 3 at the position of the water collecting well 4, and then arranging the water collecting well 4 at the bottom of the water collecting pit 3, wherein the water collecting well 4 is 500mm lower than a water filtering layer;
c-2: two finished iron buckets 17 with the diameter of 60cm and the height of 90cm are welded to form a first section of the water collecting well 4, holes are uniformly formed in the outer wall of each finished iron bucket 17 below 30cm, and carbon pipes 18 with the thickness of 20mm are communicated and connected at the position 40cm between the two finished iron buckets 17 to increase the capacity of the water collecting well 4;
c-3: within the range of 500mm of the periphery of the first section of the water collecting well 4, graded broken stones 6 are adopted for filling, the part of the water collecting well 4 extending out of the cushion layer 8 is poured to the top of the chopstick plate by C20 concrete 10 together with the periphery of the water collecting pit 3, and plugging is carried out after the C20 concrete 10 is poured for 48 hours;
D. plugging a water outlet point:
d-1: before plugging, the water level of the water collecting well 4 is reduced to a position 200mm below a cushion layer 8, and waterless operation is guaranteed during plugging;
d-2: one of the water collecting wells 4 is firstly plugged by a rubber water stopping air bag 11, the rubber water stopping air bag 11 is 200mm lower than the well mouth of the water collecting well 4, and the size of the rubber water stopping air bag 11 is phi 600mm multiplied by 650mmX20 mm;
d-3: after the rubber water-stopping air bag 11 is inflated, pouring C30 early-strength concrete 12 on the upper side of the rubber water-stopping air bag 11, arranging a reinforcing rib 13 in the C30 early-strength concrete 12, wherein the reinforcing rib 13 is arranged in a single-layer bidirectional mode at 12@ 200;
d-4: when the other water collecting well 4 is blocked, a steel plate layer 14 with the thickness of 5mm is arranged at the top end of a finished product iron barrel 17, the middle part of the steel plate layer 14 is connected with a pressure relief pipe 15 through a flange sheet, the pressure relief pipe 15 is connected to the bottom of the inner cavity of the pit-side water collecting well 4 through a phi 100 galvanized steel pipe, a valve 16 is additionally arranged at the bottom of the pressure relief pipe 15, and the valve is closed after the C20 concrete 10 is poured for 48 hours.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a foundation ditch high temperature basement rock crack water is discharged and block structure, includes spring eye (1) and sump pit (3), its characterized in that: the spring eye (1) link to each other through escape canal (2) between sump pit (3), the well bottom of sump pit (3) is provided with two sump pit (4) that distribute side by side, well groove (5) have been seted up to the opening part of spring eye (1), graded rubble (6) have all been laid to the inside of well groove (5), sump pit (3) and sump pit (4), the upper surface laminating of graded rubble (6) is connected with non-woven fabrics layer (7), bed course (8) have been pour to the upper surface of non-woven fabrics layer (7), be provided with reinforcing bar net (9) in bed course (8), C20 concrete (10) have been pour to the position outside of sump pit (4) protrusion bed course (8).
2. The foundation pit high-temperature bedrock fractured water draining and blocking structure as claimed in claim 1, wherein: the inner side of the upper end of one of the water collecting wells (4) is provided with a rubber water stop air bag (11), C30 early-strength concrete (12) is poured at the well mouth of one of the water collecting wells (4), and reinforcing ribs (13) are embedded in the C30 early-strength concrete (12).
3. The foundation pit high-temperature bedrock fractured water draining and blocking structure as claimed in claim 2, wherein: a steel plate layer (14) is arranged at the lower end of the other water collecting well (4), a pressure relief pipe (15) penetrates through the middle of the steel plate layer (14), the pressure relief pipe (15) is in sealing connection with the steel plate layer (14) through a sealing flange, and the bottom end of the pressure relief pipe (15) is connected with a valve (16).
4. The foundation pit high-temperature bedrock fractured water draining and blocking structure as claimed in claim 3, wherein: the first section of the water collecting well (4) is connected by two finished iron buckets (17) in a welding mode, and the position with the height of 40cm between the two finished iron buckets (17) is in through connection through a carbon tube (18).
5. The foundation pit high-temperature bedrock fractured water draining and blocking structure as claimed in claim 4, wherein: the lower extreme outside of finished product iron bucket (17) is seted up many and is constituteed equidistant vertical distribution's through-hole (19), and every group is provided with a plurality of through-holes (19) that are the annular array and distribute.
6. A method for draining and plugging fractured water of high-temperature bedrock of a foundation pit is characterized by comprising the following parts:
A. the part of the spring eye (1):
a-1: digging a pit (5) with the depth not less than 1500mm and the diameter 2000mm at the spring hole (1);
a-2: filling graded broken stones (6) in the pit groove (5), then paving a non-woven fabric layer (7) on the graded broken stones (6), and then pouring a cushion layer (8) on the upper surface of the non-woven fabric layer (7);
B. the part of the drainage ditch (2): a drainage ditch (2) of 500mmX1000mm is dug between the spring hole (1) and the water collection well (4);
C. the position of the water collecting well (4):
c-1: digging a water collecting pit (3) at the position of the water collecting well (4), and then arranging the water collecting well (4) at the bottom of the water collecting pit (3);
c-2: two finished iron buckets (17) with the diameter of 60cm and the height of 90cm are welded to form a first section of the water collecting well (4), holes are uniformly formed in the outer wall of each finished iron bucket (17) below 30cm, and carbon tubes (18) with the thickness of 20mm are communicated and connected between the two finished iron buckets (17) at the height of 40 cm;
c-3: graded broken stones (6) are filled within the range of 500mm of the periphery of the first section of the water collecting well (4), the part of the water collecting well (4) extending out of the cushion layer (8) is poured to the top of the chopstick plate by using C20 concrete (10) and the periphery of the water collecting pit (3), and plugging is carried out after the C20 concrete (10) is poured for 48 hours;
D. plugging a water outlet point:
d-1: before plugging, the water level of the water collecting well (4) is reduced to a position 200mm below the cushion layer (8), so that no water operation is ensured during plugging;
d-2: one of the water collecting wells (4) is plugged by adopting a rubber water stopping air bag (11), and the rubber water stopping air bag (11) is 200mm lower than the well mouth of the water collecting well (4);
d-3: after the rubber water-stopping air bag (11) is inflated, C30 early-strength concrete (12) is poured on the upper side of the rubber water-stopping air bag (11), and reinforcing ribs (13) are arranged inside the C30 early-strength concrete (12);
d-4: when another collecting well (4) is blocked, a steel plate layer (14) with the thickness of 5mm is arranged at the top end of a finished product iron barrel (17), the middle part of the steel plate layer (14) is connected with a pressure relief pipe (15) through a flange sheet, the pressure relief pipe (15) is connected to the bottom of an inner cavity of the pit edge collecting well (4) through a phi 100 galvanized steel pipe, a valve (16) is additionally arranged at the bottom of the pressure relief pipe (15), and the valve is closed after the C20 concrete (10) is poured for 48 hours.
7. The foundation pit high-temperature bedrock fracture water draining and plugging method according to claim 6, characterized in that: when the spring hole (1) is formed in the cushion layer (8) in a pouring mode, a reinforcing mesh (9) is arranged in the cushion layer (8), and the reinforcing mesh (9) is a 12@200 bidirectional single-layer reinforcing mesh.
8. The foundation pit high-temperature bedrock fracture water draining and plugging method according to claim 6, characterized in that: the water collecting well (4) is 500mm lower than the water filtering layer.
9. The foundation pit high-temperature bedrock fracture water draining and plugging method according to claim 6, characterized in that: the size of the rubber water-stopping air bag (11) is phi 600mm multiplied by 650mmX20mm, when the C30 early-strength concrete is poured, a reinforcing rib (13) is arranged in the C30 early-strength concrete, and the reinforcing rib (13) is arranged in a single-layer double-way mode at 12@ 200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111168398.6A CN114045849A (en) | 2021-09-30 | 2021-09-30 | Foundation pit high-temperature bedrock crack water drainage and plugging structure and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111168398.6A CN114045849A (en) | 2021-09-30 | 2021-09-30 | Foundation pit high-temperature bedrock crack water drainage and plugging structure and method |
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| CN114045849A true CN114045849A (en) | 2022-02-15 |
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| CN202111168398.6A Pending CN114045849A (en) | 2021-09-30 | 2021-09-30 | Foundation pit high-temperature bedrock crack water drainage and plugging structure and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198758A (en) * | 2022-07-05 | 2022-10-18 | 中铁四局集团有限公司 | Novel method for sealing bottom of foundation pit underwater concrete |
-
2021
- 2021-09-30 CN CN202111168398.6A patent/CN114045849A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198758A (en) * | 2022-07-05 | 2022-10-18 | 中铁四局集团有限公司 | Novel method for sealing bottom of foundation pit underwater concrete |
| CN115198758B (en) * | 2022-07-05 | 2023-05-30 | 中铁四局集团有限公司 | Underwater concrete bottom sealing method for foundation pit |
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